NodeJS gives Krasimir Tsonev ability to write back-end code in one of his favorite languages: JavaScript. It's the perfect technology for building real time applications. In this tutorial, he'll show you how to build a web chat application, using ExpressJS and Socket.io.
Of course, the first thing to do is get NodeJS installed on your system. If you are a Windows or Mac user, you can visit nodejs.org and download the installer. If you instead prefer Linux, I'd suggest that you refer to this link. Although I won’t go into further details on this, if you encounter any installation issues, I’m happy to help; just leave a comment below this post.
Once you have NodeJS installed, you’re ready to setup the needed instruments.
- ExpressJS – this will manage the server and the response to the user
- Jade – template engine
- Socket.io – allows for real time communication between the front-end and back-end
Continuing on, within an empty directory, create a package.json file with the following content.
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